Improvement in devices for burning petroleum



F. A. HULL.

Devices for Burning Petroleum.

NO.135,476. Patented Feb-4,1873.

AM. PHOTO urHosRAPM/c on MY (osaomvsb Pnacsss) Improvement in Devicesfor Burning Petrofollowing is a full and exact description of themanner. These two parts are united by a FFICE.

FREDERICK A. HULL, OF BELOIT, WISCONSIN.

IMPROVEMENT IN DEVICES FOR BURNING PETROLEUM.

Specification forming part of Letters Patent No. 135,476, dated February4, 1873.

To all whom it may concern:

Be it known that I, FREDERICK A. HULL, of Beloit, in the county of Rockand State of Wisconsin, have invented a new and useful leum, 850.; and Ido hereby declare that the same, reference being had to the accompanyingdrawing and to the letters of reference marked thereon. 7

It is found desirable in burning petroleum that it should be fed intothe furnace or firebox in small quantities, at regular intervals, and bymeans of an automatically-operating device. It is also essential thatthe feeding devices should be so constructed that but the smallestportion of them should be exposed to the action of the heat, and thatthe fire cannot communicate to the tank or reservoir containin g theoil.

With a view to meet the above requirements I have made this invention,which consists in combining, with a feed tank or reservoir to containthe oil and a firebox or combustionchamber, a reciprocating hollowcylinder, provided at each end with a series of perforations, by meansof which the reciprocating cylinder may be filled with oil from the tankat one end of the stroke, and may be emptied of its contents into thecombustion-chamber at the other end of its stroke, as will be explained.

In the drawing, A represents the tank, of any ordinary or approvedconstruction. 13 is the combustionchamber or. fire-box, which may alsobe made in any usual or desired connecting-tube, O, in which is fitted ahollow cylinder, 0, to which a direct reciprocation is imparted by meansof the crank D and pitman d, or some other equivalent device. Thecylinder 0 is provided with a number of small perforations, c 0,arranged, by preference, in circumferential lines, in order that theholes on the upper side may afford free vent while 13h? liquid isescaping from those on the lower si( e.

It will be readily seen that as the cylinder is drawn into the tank theoil will enter perforations 0 until the shell is filled, and that whenit (the cylinder) is thrust into the combustion-chamber the liquid willbe discharged through perforations c.

I am aware that a piston with a series of separate cells, boredtransversely through it, has been employed for feeding boilers; but thisconstruction is not practicable for feeding petroleum to a furnace,because the entire length of the piston must be thrust into saidfurnace, and is too much exposed to the heat, whereas I only thrust minein far enough to present the line of perforations, which permits theentire contents of the cylinder to escape. This enables me to employ acam for operating it in such manner that it (the cylinder) shall bethrust just far enough into the furnace to open the perforation c, andthen to pause in its motions until the oil shall have been discharged.

M y construction also enables me to employ any length of hollow cylinderwhich may be necessary to insure a perfect protection against firecommunicating from the furnace to the tank, it being impossible for thefire to pass through my cylinder, as I can make my perforations so smallthat flame cannot enter through them because the oil will flow through asmall aperture formed in the thin shell of a cylinder when it could notbe discharged from a cell of the same diameter bored in a solid piston,because it would be held by capillary attraction.

Having now described my invention, what I claim as new, and desire tosecure by Let ters Patent, i s- In combination with the tank A andfurnace or combustion-chamber B, the hollow cylinder 0, provided withperforations c c and made to reciprocate in the connecting-tube 0,substantially as and for the purpose set forth.

This specification signed and witnessed this 16th day of July, 1872.

FREDERICK A. HULL.

WVitnesses:

ALBERT FOWLER, G. W. FORD.

